Free Vibration Analysis of Stiffened and Unstiffened Membranes. International Journal of Emerging Trends in Science and Technology, [S. l.], v. 3, n. 04, p. 3800–3805, 2016. Disponível em: http://igmpublication.com/ijetst.in/index.php/ijetst/article/view/1053. Acesso em: 28 sep. 2026.